add ratatui crate support

examples/minimal.rs

@@ -1,13 +1,26 @@
+#[cfg(feature = "ratatui-crossterm")]
+use crossterm_026 as crossterm;
+
 use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
 use crossterm::terminal::{
     disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen,
 };
 use std::io;
-use tui::backend::CrosstermBackend;
-use tui::widgets::{Block, Borders};
-use tui::Terminal;
 use tui_textarea::{Input, Key, TextArea};
 
+#[cfg(feature = "ratatui-crossterm")]
+use ratatui::{
+    backend::CrosstermBackend,
+    widgets::{Block, Borders},
+    Terminal,
+};
+#[cfg(feature = "crossterm")]
+use tui::{
+    backend::CrosstermBackend,
+    widgets::{Block, Borders},
+    Terminal,
+};
+
 fn main() -> io::Result<()> {
     let stdout = io::stdout();
     let mut stdout = stdout.lock();